1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 * Lee Revell <rlrevell@joe-job.com>
5 * James Courtier-Dutton <James@superbug.co.uk>
6 * Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
7 * Creative Labs, Inc.
8 *
9 * Routines for control of EMU10K1 chips / PCM routines
10 */
11
12 #include <linux/pci.h>
13 #include <linux/delay.h>
14 #include <linux/slab.h>
15 #include <linux/time.h>
16 #include <linux/init.h>
17 #include <sound/core.h>
18 #include <sound/emu10k1.h>
19
20 static void snd_emu10k1_pcm_interrupt(struct snd_emu10k1 *emu,
21 struct snd_emu10k1_voice *voice)
22 {
23 struct snd_emu10k1_pcm *epcm;
24
25 epcm = voice->epcm;
26 if (!epcm)
27 return;
28 if (epcm->substream == NULL)
29 return;
30 #if 0
31 dev_dbg(emu->card->dev,
32 "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
33 epcm->substream->runtime->hw->pointer(emu, epcm->substream),
34 snd_pcm_lib_period_bytes(epcm->substream),
35 snd_pcm_lib_buffer_bytes(epcm->substream));
36 #endif
37 snd_pcm_period_elapsed(epcm->substream);
38 }
39
40 static void snd_emu10k1_pcm_ac97adc_interrupt(struct snd_emu10k1 *emu,
41 unsigned int status)
42 {
43 #if 0
44 if (status & IPR_ADCBUFHALFFULL) {
45 if (emu->pcm_capture_substream->runtime->mode == SNDRV_PCM_MODE_FRAME)
46 return;
47 }
48 #endif
49 snd_pcm_period_elapsed(emu->pcm_capture_substream);
50 }
51
52 static void snd_emu10k1_pcm_ac97mic_interrupt(struct snd_emu10k1 *emu,
53 unsigned int status)
54 {
55 #if 0
56 if (status & IPR_MICBUFHALFFULL) {
57 if (emu->pcm_capture_mic_substream->runtime->mode == SNDRV_PCM_MODE_FRAME)
58 return;
59 }
60 #endif
61 snd_pcm_period_elapsed(emu->pcm_capture_mic_substream);
62 }
63
64 static void snd_emu10k1_pcm_efx_interrupt(struct snd_emu10k1 *emu,
65 unsigned int status)
66 {
67 #if 0
68 if (status & IPR_EFXBUFHALFFULL) {
69 if (emu->pcm_capture_efx_substream->runtime->mode == SNDRV_PCM_MODE_FRAME)
70 return;
71 }
72 #endif
73 snd_pcm_period_elapsed(emu->pcm_capture_efx_substream);
74 }
75
76 static void snd_emu10k1_pcm_free_voices(struct snd_emu10k1_pcm *epcm)
77 {
78 for (unsigned i = 0; i < ARRAY_SIZE(epcm->voices); i++) {
79 if (epcm->voices[i]) {
80 snd_emu10k1_voice_free(epcm->emu, epcm->voices[i]);
81 epcm->voices[i] = NULL;
82 }
83 }
84 }
85
86 static int snd_emu10k1_pcm_channel_alloc(struct snd_emu10k1_pcm *epcm,
87 int type, int count, int channels)
88 {
89 int err;
90
91 snd_emu10k1_pcm_free_voices(epcm);
92
93 err = snd_emu10k1_voice_alloc(epcm->emu,
94 type, count, channels,
95 epcm, &epcm->voices[0]);
96 if (err < 0)
97 return err;
98
99 if (epcm->extra == NULL) {
100 // The hardware supports only (half-)loop interrupts, so to support an
101 // arbitrary number of periods per buffer, we use an extra voice with a
102 // period-sized loop as the interrupt source. Additionally, the interrupt
103 // timing of the hardware is "suboptimal" and needs some compensation.
104 err = snd_emu10k1_voice_alloc(epcm->emu,
105 type + 1, 1, 1,
106 epcm, &epcm->extra);
107 if (err < 0) {
108 /*
109 dev_dbg(emu->card->dev, "pcm_channel_alloc: "
110 "failed extra: voices=%d, frame=%d\n",
111 voices, frame);
112 */
113 snd_emu10k1_pcm_free_voices(epcm);
114 return err;
115 }
116 epcm->extra->interrupt = snd_emu10k1_pcm_interrupt;
117 }
118
119 return 0;
120 }
121
122 // Primes 2-7 and 2^n multiples thereof, up to 16.
123 static const unsigned int efx_capture_channels[] = {
124 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16
125 };
126
127 static const struct snd_pcm_hw_constraint_list hw_constraints_efx_capture_channels = {
128 .count = ARRAY_SIZE(efx_capture_channels),
129 .list = efx_capture_channels,
130 .mask = 0
131 };
132
133 static const unsigned int capture_buffer_sizes[31] = {
134 384, 448, 512, 640,
135 384*2, 448*2, 512*2, 640*2,
136 384*4, 448*4, 512*4, 640*4,
137 384*8, 448*8, 512*8, 640*8,
138 384*16, 448*16, 512*16, 640*16,
139 384*32, 448*32, 512*32, 640*32,
140 384*64, 448*64, 512*64, 640*64,
141 384*128,448*128,512*128
142 };
143
144 static const struct snd_pcm_hw_constraint_list hw_constraints_capture_buffer_sizes = {
145 .count = 31,
146 .list = capture_buffer_sizes,
147 .mask = 0
148 };
149
150 static const unsigned int capture_rates[8] = {
151 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000
152 };
153
154 static const struct snd_pcm_hw_constraint_list hw_constraints_capture_rates = {
155 .count = 8,
156 .list = capture_rates,
157 .mask = 0
158 };
159
160 static unsigned int snd_emu10k1_capture_rate_reg(unsigned int rate)
161 {
162 switch (rate) {
163 case 8000: return ADCCR_SAMPLERATE_8;
164 case 11025: return ADCCR_SAMPLERATE_11;
165 case 16000: return ADCCR_SAMPLERATE_16;
166 case 22050: return ADCCR_SAMPLERATE_22;
167 case 24000: return ADCCR_SAMPLERATE_24;
168 case 32000: return ADCCR_SAMPLERATE_32;
169 case 44100: return ADCCR_SAMPLERATE_44;
170 case 48000: return ADCCR_SAMPLERATE_48;
171 default:
172 snd_BUG();
173 return ADCCR_SAMPLERATE_8;
174 }
175 }
176
177 static const unsigned int audigy_capture_rates[9] = {
178 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000
179 };
180
181 static const struct snd_pcm_hw_constraint_list hw_constraints_audigy_capture_rates = {
182 .count = 9,
183 .list = audigy_capture_rates,
184 .mask = 0
185 };
186
187 static unsigned int snd_emu10k1_audigy_capture_rate_reg(unsigned int rate)
188 {
189 switch (rate) {
190 case 8000: return A_ADCCR_SAMPLERATE_8;
191 case 11025: return A_ADCCR_SAMPLERATE_11;
192 case 12000: return A_ADCCR_SAMPLERATE_12;
193 case 16000: return ADCCR_SAMPLERATE_16;
194 case 22050: return ADCCR_SAMPLERATE_22;
195 case 24000: return ADCCR_SAMPLERATE_24;
196 case 32000: return ADCCR_SAMPLERATE_32;
197 case 44100: return ADCCR_SAMPLERATE_44;
198 case 48000: return ADCCR_SAMPLERATE_48;
199 default:
200 snd_BUG();
201 return A_ADCCR_SAMPLERATE_8;
202 }
203 }
204
205 static void snd_emu10k1_constrain_capture_rates(struct snd_emu10k1 *emu,
206 struct snd_pcm_runtime *runtime)
207 {
208 if (emu->card_capabilities->emu_model &&
209 emu->emu1010.word_clock == 44100) {
210 // This also sets the rate constraint by deleting SNDRV_PCM_RATE_KNOT
211 runtime->hw.rates = SNDRV_PCM_RATE_11025 | \
212 SNDRV_PCM_RATE_22050 | \
213 SNDRV_PCM_RATE_44100;
214 runtime->hw.rate_min = 11025;
215 runtime->hw.rate_max = 44100;
216 return;
217 }
218 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
219 emu->audigy ? &hw_constraints_audigy_capture_rates :
220 &hw_constraints_capture_rates);
221 }
222
223 static void snd_emu1010_constrain_efx_rate(struct snd_emu10k1 *emu,
224 struct snd_pcm_runtime *runtime)
225 {
226 int rate;
227
228 rate = emu->emu1010.word_clock;
229 runtime->hw.rate_min = runtime->hw.rate_max = rate;
230 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
231 }
232
233 static unsigned int emu10k1_calc_pitch_target(unsigned int rate)
234 {
235 unsigned int pitch_target;
236
237 pitch_target = (rate << 8) / 375;
238 pitch_target = (pitch_target >> 1) + (pitch_target & 1);
239 return pitch_target;
240 }
241
242 #define PITCH_48000 0x00004000
243 #define PITCH_96000 0x00008000
244 #define PITCH_85000 0x00007155
245 #define PITCH_80726 0x00006ba2
246 #define PITCH_67882 0x00005a82
247 #define PITCH_57081 0x00004c1c
248
249 static unsigned int emu10k1_select_interprom(unsigned int pitch_target)
250 {
251 if (pitch_target == PITCH_48000)
252 return CCCA_INTERPROM_0;
253 else if (pitch_target < PITCH_48000)
254 return CCCA_INTERPROM_1;
255 else if (pitch_target >= PITCH_96000)
256 return CCCA_INTERPROM_0;
257 else if (pitch_target >= PITCH_85000)
258 return CCCA_INTERPROM_6;
259 else if (pitch_target >= PITCH_80726)
260 return CCCA_INTERPROM_5;
261 else if (pitch_target >= PITCH_67882)
262 return CCCA_INTERPROM_4;
263 else if (pitch_target >= PITCH_57081)
264 return CCCA_INTERPROM_3;
265 else
266 return CCCA_INTERPROM_2;
267 }
268
269 static u16 emu10k1_send_target_from_amount(u8 amount)
270 {
271 static const u8 shifts[8] = { 4, 4, 5, 6, 7, 8, 9, 10 };
272 static const u16 offsets[8] = { 0, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000 };
273 u8 exp;
274
275 if (amount == 0xff)
276 return 0xffff;
277 exp = amount >> 5;
278 return ((amount & 0x1f) << shifts[exp]) + offsets[exp];
279 }
280
281 static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1 *emu,
282 struct snd_emu10k1_voice *evoice,
283 bool w_16, bool stereo,
284 unsigned int start_addr,
285 unsigned int end_addr,
286 const unsigned char *send_routing,
287 const unsigned char *send_amount)
288 {
289 unsigned int silent_page;
290 int voice;
291
292 voice = evoice->number;
293
294 silent_page = ((unsigned int)emu->silent_page.addr << emu->address_mode) |
295 (emu->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0);
296 snd_emu10k1_ptr_write_multiple(emu, voice,
297 // Not really necessary for the slave, but it doesn't hurt
298 CPF, stereo ? CPF_STEREO_MASK : 0,
299 // Assumption that PT is already 0 so no harm overwriting
300 PTRX, (send_amount[0] << 8) | send_amount[1],
301 // Stereo slaves don't need to have the addresses set, but it doesn't hurt
302 DSL, end_addr | (send_amount[3] << 24),
303 PSST, start_addr | (send_amount[2] << 24),
304 CCCA, emu10k1_select_interprom(evoice->epcm->pitch_target) |
305 (w_16 ? 0 : CCCA_8BITSELECT),
306 // Clear filter delay memory
307 Z1, 0,
308 Z2, 0,
309 // Invalidate maps
310 MAPA, silent_page,
311 MAPB, silent_page,
312 // Disable filter (in conjunction with CCCA_RESONANCE == 0)
313 VTFT, VTFT_FILTERTARGET_MASK,
314 CVCF, CVCF_CURRENTFILTER_MASK,
315 REGLIST_END);
316 // Setup routing
317 if (emu->audigy) {
318 snd_emu10k1_ptr_write_multiple(emu, voice,
319 A_FXRT1, snd_emu10k1_compose_audigy_fxrt1(send_routing),
320 A_FXRT2, snd_emu10k1_compose_audigy_fxrt2(send_routing),
321 A_SENDAMOUNTS, snd_emu10k1_compose_audigy_sendamounts(send_amount),
322 REGLIST_END);
323 for (int i = 0; i < 4; i++) {
324 u32 aml = emu10k1_send_target_from_amount(send_amount[2 * i]);
325 u32 amh = emu10k1_send_target_from_amount(send_amount[2 * i + 1]);
326 snd_emu10k1_ptr_write(emu, A_CSBA + i, voice, (amh << 16) | aml);
327 }
328 } else {
329 snd_emu10k1_ptr_write(emu, FXRT, voice,
330 snd_emu10k1_compose_send_routing(send_routing));
331 }
332
333 emu->voices[voice].dirty = 1;
334 }
335
336 static void snd_emu10k1_pcm_init_voices(struct snd_emu10k1 *emu,
337 struct snd_emu10k1_voice *evoice,
338 bool w_16, bool stereo,
339 unsigned int start_addr,
340 unsigned int end_addr,
341 struct snd_emu10k1_pcm_mixer *mix)
342 {
343 spin_lock_irq(&emu->reg_lock);
344 snd_emu10k1_pcm_init_voice(emu, evoice, w_16, stereo,
345 start_addr, end_addr,
346 &mix->send_routing[stereo][0],
347 &mix->send_volume[stereo][0]);
348 if (stereo)
349 snd_emu10k1_pcm_init_voice(emu, evoice + 1, w_16, true,
350 start_addr, end_addr,
351 &mix->send_routing[2][0],
352 &mix->send_volume[2][0]);
353 spin_unlock_irq(&emu->reg_lock);
354 }
355
356 static void snd_emu10k1_pcm_init_extra_voice(struct snd_emu10k1 *emu,
357 struct snd_emu10k1_voice *evoice,
358 bool w_16,
359 unsigned int start_addr,
360 unsigned int end_addr)
361 {
362 static const unsigned char send_routing[8] = { 0, 1, 2, 3, 4, 5, 6, 7 };
363 static const unsigned char send_amount[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
364
365 snd_emu10k1_pcm_init_voice(emu, evoice, w_16, false,
366 start_addr, end_addr,
367 send_routing, send_amount);
368 }
369
370 static int snd_emu10k1_playback_hw_params(struct snd_pcm_substream *substream,
371 struct snd_pcm_hw_params *hw_params)
372 {
373 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
374 struct snd_pcm_runtime *runtime = substream->runtime;
375 struct snd_emu10k1_pcm *epcm = runtime->private_data;
376 size_t alloc_size;
377 int type, channels, count;
378 int err;
379
380 if (epcm->type == PLAYBACK_EMUVOICE) {
381 type = EMU10K1_PCM;
382 channels = 1;
383 count = params_channels(hw_params);
384 } else {
385 type = EMU10K1_EFX;
386 channels = params_channels(hw_params);
387 count = 1;
388 }
389 err = snd_emu10k1_pcm_channel_alloc(epcm, type, count, channels);
390 if (err < 0)
391 return err;
392
393 alloc_size = params_buffer_bytes(hw_params);
394 if (emu->iommu_workaround)
395 alloc_size += EMUPAGESIZE;
396 err = snd_pcm_lib_malloc_pages(substream, alloc_size);
397 if (err < 0)
398 return err;
399 if (emu->iommu_workaround && runtime->dma_bytes >= EMUPAGESIZE)
400 runtime->dma_bytes -= EMUPAGESIZE;
401 if (err > 0) { /* change */
402 int mapped;
403 if (epcm->memblk != NULL)
404 snd_emu10k1_free_pages(emu, epcm->memblk);
405 epcm->memblk = snd_emu10k1_alloc_pages(emu, substream);
406 epcm->start_addr = 0;
407 if (! epcm->memblk)
408 return -ENOMEM;
409 mapped = ((struct snd_emu10k1_memblk *)epcm->memblk)->mapped_page;
410 if (mapped < 0)
411 return -ENOMEM;
412 epcm->start_addr = mapped << PAGE_SHIFT;
413 }
414 return 0;
415 }
416
417 static int snd_emu10k1_playback_hw_free(struct snd_pcm_substream *substream)
418 {
419 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
420 struct snd_pcm_runtime *runtime = substream->runtime;
421 struct snd_emu10k1_pcm *epcm;
422
423 if (runtime->private_data == NULL)
424 return 0;
425 epcm = runtime->private_data;
426 if (epcm->extra) {
427 snd_emu10k1_voice_free(epcm->emu, epcm->extra);
428 epcm->extra = NULL;
429 }
430 snd_emu10k1_pcm_free_voices(epcm);
431 if (epcm->memblk) {
432 snd_emu10k1_free_pages(emu, epcm->memblk);
433 epcm->memblk = NULL;
434 epcm->start_addr = 0;
435 }
436 snd_pcm_lib_free_pages(substream);
437 return 0;
438 }
439
440 static int snd_emu10k1_playback_prepare(struct snd_pcm_substream *substream)
441 {
442 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
443 struct snd_pcm_runtime *runtime = substream->runtime;
444 struct snd_emu10k1_pcm *epcm = runtime->private_data;
445 bool w_16 = snd_pcm_format_width(runtime->format) == 16;
446 bool stereo = runtime->channels == 2;
447 unsigned int start_addr, end_addr;
448 unsigned int rate;
449
450 rate = runtime->rate;
451 if (emu->card_capabilities->emu_model &&
452 emu->emu1010.word_clock == 44100)
453 rate = rate * 480 / 441;
454 epcm->pitch_target = emu10k1_calc_pitch_target(rate);
455
456 start_addr = epcm->start_addr >> w_16;
457 end_addr = start_addr + runtime->period_size;
458 snd_emu10k1_pcm_init_extra_voice(emu, epcm->extra, w_16,
459 start_addr, end_addr);
460 start_addr >>= stereo;
461 epcm->ccca_start_addr = start_addr;
462 end_addr = start_addr + runtime->buffer_size;
463 snd_emu10k1_pcm_init_voices(emu, epcm->voices[0], w_16, stereo,
464 start_addr, end_addr,
465 &emu->pcm_mixer[substream->number]);
466
467 return 0;
468 }
469
470 static int snd_emu10k1_efx_playback_prepare(struct snd_pcm_substream *substream)
471 {
472 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
473 struct snd_pcm_runtime *runtime = substream->runtime;
474 struct snd_emu10k1_pcm *epcm = runtime->private_data;
475 unsigned int start_addr;
476 unsigned int extra_size, channel_size;
477 unsigned int i;
478
479 epcm->pitch_target = PITCH_48000;
480
481 start_addr = epcm->start_addr >> 1; // 16-bit voices
482
483 extra_size = runtime->period_size;
484 channel_size = runtime->buffer_size;
485
486 snd_emu10k1_pcm_init_extra_voice(emu, epcm->extra, true,
487 start_addr, start_addr + extra_size);
488
489 epcm->ccca_start_addr = start_addr;
490 for (i = 0; i < runtime->channels; i++) {
491 snd_emu10k1_pcm_init_voices(emu, epcm->voices[i], true, false,
492 start_addr, start_addr + channel_size,
493 &emu->efx_pcm_mixer[i]);
494 start_addr += channel_size;
495 }
496
497 return 0;
498 }
499
500 static const struct snd_pcm_hardware snd_emu10k1_efx_playback =
501 {
502 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_NONINTERLEAVED |
503 SNDRV_PCM_INFO_BLOCK_TRANSFER |
504 SNDRV_PCM_INFO_RESUME |
505 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE),
506 .formats = SNDRV_PCM_FMTBIT_S16_LE,
507 .rates = SNDRV_PCM_RATE_48000,
508 .rate_min = 48000,
509 .rate_max = 48000,
510 .channels_min = 1,
511 .channels_max = NUM_EFX_PLAYBACK,
512 .buffer_bytes_max = (128*1024),
513 .period_bytes_max = (128*1024),
514 .periods_min = 2,
515 .periods_max = 1024,
516 .fifo_size = 0,
517 };
518
519 static int snd_emu10k1_capture_prepare(struct snd_pcm_substream *substream)
520 {
521 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
522 struct snd_pcm_runtime *runtime = substream->runtime;
523 struct snd_emu10k1_pcm *epcm = runtime->private_data;
524 int idx;
525
526 /* zeroing the buffer size will stop capture */
527 snd_emu10k1_ptr_write(emu, epcm->capture_bs_reg, 0, 0);
528 switch (epcm->type) {
529 case CAPTURE_AC97ADC:
530 snd_emu10k1_ptr_write(emu, ADCCR, 0, 0);
531 break;
532 case CAPTURE_EFX:
533 if (emu->card_capabilities->emu_model) {
534 // The upper 32 16-bit capture voices, two for each of the 16 32-bit channels.
535 // The lower voices are occupied by A_EXTOUT_*_CAP*.
536 epcm->capture_cr_val = 0;
537 epcm->capture_cr_val2 = 0xffffffff >> (32 - runtime->channels * 2);
538 }
539 if (emu->audigy) {
540 snd_emu10k1_ptr_write_multiple(emu, 0,
541 A_FXWC1, 0,
542 A_FXWC2, 0,
543 REGLIST_END);
544 } else
545 snd_emu10k1_ptr_write(emu, FXWC, 0, 0);
546 break;
547 default:
548 break;
549 }
550 snd_emu10k1_ptr_write(emu, epcm->capture_ba_reg, 0, runtime->dma_addr);
551 epcm->capture_bufsize = snd_pcm_lib_buffer_bytes(substream);
552 epcm->capture_bs_val = 0;
553 for (idx = 0; idx < 31; idx++) {
554 if (capture_buffer_sizes[idx] == epcm->capture_bufsize) {
555 epcm->capture_bs_val = idx + 1;
556 break;
557 }
558 }
559 if (epcm->capture_bs_val == 0) {
560 snd_BUG();
561 epcm->capture_bs_val++;
562 }
563 if (epcm->type == CAPTURE_AC97ADC) {
564 unsigned rate = runtime->rate;
565 if (!(runtime->hw.rates & SNDRV_PCM_RATE_48000))
566 rate = rate * 480 / 441;
567
568 epcm->capture_cr_val = emu->audigy ? A_ADCCR_LCHANENABLE : ADCCR_LCHANENABLE;
569 if (runtime->channels > 1)
570 epcm->capture_cr_val |= emu->audigy ? A_ADCCR_RCHANENABLE : ADCCR_RCHANENABLE;
571 epcm->capture_cr_val |= emu->audigy ?
572 snd_emu10k1_audigy_capture_rate_reg(rate) :
573 snd_emu10k1_capture_rate_reg(rate);
574 }
575 return 0;
576 }
577
578 static void snd_emu10k1_playback_fill_cache(struct snd_emu10k1 *emu,
579 unsigned voice,
580 u32 sample, bool stereo)
581 {
582 u32 ccr;
583
584 // We assume that the cache is resting at this point (i.e.,
585 // CCR_CACHEINVALIDSIZE is very small).
586
587 // Clear leading frames. For simplicitly, this does too much,
588 // except for 16-bit stereo. And the interpolator will actually
589 // access them at all only when we're pitch-shifting.
590 for (int i = 0; i < 3; i++)
591 snd_emu10k1_ptr_write(emu, CD0 + i, voice, sample);
592
593 // Fill cache
594 ccr = (64 - 3) << REG_SHIFT(CCR_CACHEINVALIDSIZE);
595 if (stereo) {
596 // The engine goes haywire if CCR_READADDRESS is out of sync
597 snd_emu10k1_ptr_write(emu, CCR, voice + 1, ccr);
598 }
599 snd_emu10k1_ptr_write(emu, CCR, voice, ccr);
600 }
601
602 static void snd_emu10k1_playback_prepare_voices(struct snd_emu10k1 *emu,
603 struct snd_emu10k1_pcm *epcm,
604 bool w_16, bool stereo,
605 int channels)
606 {
607 struct snd_pcm_substream *substream = epcm->substream;
608 struct snd_pcm_runtime *runtime = substream->runtime;
609 unsigned eloop_start = epcm->start_addr >> w_16;
610 unsigned loop_start = eloop_start >> stereo;
611 unsigned eloop_size = runtime->period_size;
612 unsigned loop_size = runtime->buffer_size;
613 u32 sample = w_16 ? 0 : 0x80808080;
614
615 // To make the playback actually start at the 1st frame,
616 // we need to compensate for two circumstances:
617 // - The actual position is delayed by the cache size (64 frames)
618 // - The interpolator is centered around the 4th frame
619 loop_start += (epcm->resume_pos + 64 - 3) % loop_size;
620 for (int i = 0; i < channels; i++) {
621 unsigned voice = epcm->voices[i]->number;
622 snd_emu10k1_ptr_write(emu, CCCA_CURRADDR, voice, loop_start);
623 loop_start += loop_size;
624 snd_emu10k1_playback_fill_cache(emu, voice, sample, stereo);
625 }
626
627 // The interrupt is triggered when CCCA_CURRADDR (CA) wraps around,
628 // which is ahead of the actual playback position, so the interrupt
629 // source needs to be delayed.
630 //
631 // In principle, this wouldn't need to be the cache's entire size - in
632 // practice, CCR_CACHEINVALIDSIZE (CIS) > `fetch threshold` has never
633 // been observed, and assuming 40 _bytes_ should be safe.
634 //
635 // The cache fills are somewhat random, which makes it impossible to
636 // align them with the interrupts. This makes a non-delayed interrupt
637 // source not practical, as the interrupt handler would have to wait
638 // for (CA - CIS) >= period_boundary for every channel in the stream.
639 //
640 // This is why all other (open) drivers for these chips use timer-based
641 // interrupts.
642 //
643 eloop_start += (epcm->resume_pos + eloop_size - 3) % eloop_size;
644 snd_emu10k1_ptr_write(emu, CCCA_CURRADDR, epcm->extra->number, eloop_start);
645
646 // It takes a moment until the cache fills complete,
647 // but the unmuting takes long enough for that.
648 }
649
650 static void snd_emu10k1_playback_commit_volume(struct snd_emu10k1 *emu,
651 struct snd_emu10k1_voice *evoice,
652 unsigned int vattn)
653 {
654 snd_emu10k1_ptr_write_multiple(emu, evoice->number,
655 VTFT, vattn | VTFT_FILTERTARGET_MASK,
656 CVCF, vattn | CVCF_CURRENTFILTER_MASK,
657 REGLIST_END);
658 }
659
660 static void snd_emu10k1_playback_unmute_voice(struct snd_emu10k1 *emu,
661 struct snd_emu10k1_voice *evoice,
662 bool stereo, bool master,
663 struct snd_emu10k1_pcm_mixer *mix)
664 {
665 unsigned int vattn;
666 unsigned int tmp;
667
668 tmp = stereo ? (master ? 1 : 2) : 0;
669 vattn = mix->attn[tmp] << 16;
670 snd_emu10k1_playback_commit_volume(emu, evoice, vattn);
671 }
672
673 static void snd_emu10k1_playback_unmute_voices(struct snd_emu10k1 *emu,
674 struct snd_emu10k1_voice *evoice,
675 bool stereo,
676 struct snd_emu10k1_pcm_mixer *mix)
677 {
678 snd_emu10k1_playback_unmute_voice(emu, evoice, stereo, true, mix);
679 if (stereo)
680 snd_emu10k1_playback_unmute_voice(emu, evoice + 1, true, false, mix);
681 }
682
683 static void snd_emu10k1_playback_mute_voice(struct snd_emu10k1 *emu,
684 struct snd_emu10k1_voice *evoice)
685 {
686 snd_emu10k1_playback_commit_volume(emu, evoice, 0);
687 }
688
689 static void snd_emu10k1_playback_mute_voices(struct snd_emu10k1 *emu,
690 struct snd_emu10k1_voice *evoice,
691 bool stereo)
692 {
693 snd_emu10k1_playback_mute_voice(emu, evoice);
694 if (stereo)
695 snd_emu10k1_playback_mute_voice(emu, evoice + 1);
696 }
697
698 static void snd_emu10k1_playback_commit_pitch(struct snd_emu10k1 *emu,
699 u32 voice, u32 pitch_target)
700 {
701 u32 ptrx = snd_emu10k1_ptr_read(emu, PTRX, voice);
702 u32 cpf = snd_emu10k1_ptr_read(emu, CPF, voice);
703 snd_emu10k1_ptr_write_multiple(emu, voice,
704 PTRX, (ptrx & ~PTRX_PITCHTARGET_MASK) | pitch_target,
705 CPF, (cpf & ~(CPF_CURRENTPITCH_MASK | CPF_FRACADDRESS_MASK)) | pitch_target,
706 REGLIST_END);
707 }
708
709 static void snd_emu10k1_playback_trigger_voice(struct snd_emu10k1 *emu,
710 struct snd_emu10k1_voice *evoice)
711 {
712 unsigned int voice;
713
714 voice = evoice->number;
715 snd_emu10k1_playback_commit_pitch(emu, voice, evoice->epcm->pitch_target << 16);
716 }
717
718 static void snd_emu10k1_playback_stop_voice(struct snd_emu10k1 *emu,
719 struct snd_emu10k1_voice *evoice)
720 {
721 unsigned int voice;
722
723 voice = evoice->number;
724 snd_emu10k1_playback_commit_pitch(emu, voice, 0);
725 }
726
727 static void snd_emu10k1_playback_set_running(struct snd_emu10k1 *emu,
728 struct snd_emu10k1_pcm *epcm)
729 {
730 epcm->running = 1;
731 snd_emu10k1_voice_intr_enable(emu, epcm->extra->number);
732 }
733
734 static void snd_emu10k1_playback_set_stopped(struct snd_emu10k1 *emu,
735 struct snd_emu10k1_pcm *epcm)
736 {
737 snd_emu10k1_voice_intr_disable(emu, epcm->extra->number);
738 epcm->running = 0;
739 }
740
741 static int snd_emu10k1_playback_trigger(struct snd_pcm_substream *substream,
742 int cmd)
743 {
744 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
745 struct snd_pcm_runtime *runtime = substream->runtime;
746 struct snd_emu10k1_pcm *epcm = runtime->private_data;
747 struct snd_emu10k1_pcm_mixer *mix;
748 bool w_16 = snd_pcm_format_width(runtime->format) == 16;
749 bool stereo = runtime->channels == 2;
750 int result = 0;
751
752 /*
753 dev_dbg(emu->card->dev,
754 "trigger - emu10k1 = 0x%x, cmd = %i, pointer = %i\n",
755 (int)emu, cmd, substream->ops->pointer(substream))
756 */
757 spin_lock(&emu->reg_lock);
758 switch (cmd) {
759 case SNDRV_PCM_TRIGGER_START:
760 snd_emu10k1_playback_prepare_voices(emu, epcm, w_16, stereo, 1);
761 fallthrough;
762 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
763 case SNDRV_PCM_TRIGGER_RESUME:
764 mix = &emu->pcm_mixer[substream->number];
765 snd_emu10k1_playback_unmute_voices(emu, epcm->voices[0], stereo, mix);
766 snd_emu10k1_playback_set_running(emu, epcm);
767 snd_emu10k1_playback_trigger_voice(emu, epcm->voices[0]);
768 snd_emu10k1_playback_trigger_voice(emu, epcm->extra);
769 break;
770 case SNDRV_PCM_TRIGGER_STOP:
771 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
772 case SNDRV_PCM_TRIGGER_SUSPEND:
773 snd_emu10k1_playback_stop_voice(emu, epcm->voices[0]);
774 snd_emu10k1_playback_stop_voice(emu, epcm->extra);
775 snd_emu10k1_playback_set_stopped(emu, epcm);
776 snd_emu10k1_playback_mute_voices(emu, epcm->voices[0], stereo);
777 break;
778 default:
779 result = -EINVAL;
780 break;
781 }
782 spin_unlock(&emu->reg_lock);
783 return result;
784 }
785
786 static int snd_emu10k1_capture_trigger(struct snd_pcm_substream *substream,
787 int cmd)
788 {
789 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
790 struct snd_pcm_runtime *runtime = substream->runtime;
791 struct snd_emu10k1_pcm *epcm = runtime->private_data;
792 int result = 0;
793
794 spin_lock(&emu->reg_lock);
795 switch (cmd) {
796 case SNDRV_PCM_TRIGGER_START:
797 case SNDRV_PCM_TRIGGER_RESUME:
798 /* hmm this should cause full and half full interrupt to be raised? */
799 outl(epcm->capture_ipr, emu->port + IPR);
800 snd_emu10k1_intr_enable(emu, epcm->capture_inte);
801 /*
802 dev_dbg(emu->card->dev, "adccr = 0x%x, adcbs = 0x%x\n",
803 epcm->adccr, epcm->adcbs);
804 */
805 switch (epcm->type) {
806 case CAPTURE_AC97ADC:
807 snd_emu10k1_ptr_write(emu, ADCCR, 0, epcm->capture_cr_val);
808 break;
809 case CAPTURE_EFX:
810 if (emu->audigy) {
811 snd_emu10k1_ptr_write_multiple(emu, 0,
812 A_FXWC1, epcm->capture_cr_val,
813 A_FXWC2, epcm->capture_cr_val2,
814 REGLIST_END);
815 dev_dbg(emu->card->dev,
816 "cr_val=0x%x, cr_val2=0x%x\n",
817 epcm->capture_cr_val,
818 epcm->capture_cr_val2);
819 } else
820 snd_emu10k1_ptr_write(emu, FXWC, 0, epcm->capture_cr_val);
821 break;
822 default:
823 break;
824 }
825 snd_emu10k1_ptr_write(emu, epcm->capture_bs_reg, 0, epcm->capture_bs_val);
826 epcm->running = 1;
827 epcm->first_ptr = 1;
828 break;
829 case SNDRV_PCM_TRIGGER_STOP:
830 case SNDRV_PCM_TRIGGER_SUSPEND:
831 epcm->running = 0;
832 snd_emu10k1_intr_disable(emu, epcm->capture_inte);
833 outl(epcm->capture_ipr, emu->port + IPR);
834 snd_emu10k1_ptr_write(emu, epcm->capture_bs_reg, 0, 0);
835 switch (epcm->type) {
836 case CAPTURE_AC97ADC:
837 snd_emu10k1_ptr_write(emu, ADCCR, 0, 0);
838 break;
839 case CAPTURE_EFX:
840 if (emu->audigy) {
841 snd_emu10k1_ptr_write_multiple(emu, 0,
842 A_FXWC1, 0,
843 A_FXWC2, 0,
844 REGLIST_END);
845 } else
846 snd_emu10k1_ptr_write(emu, FXWC, 0, 0);
847 break;
848 default:
849 break;
850 }
851 break;
852 default:
853 result = -EINVAL;
854 }
855 spin_unlock(&emu->reg_lock);
856 return result;
857 }
858
859 static snd_pcm_uframes_t snd_emu10k1_playback_pointer(struct snd_pcm_substream *substream)
860 {
861 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
862 struct snd_pcm_runtime *runtime = substream->runtime;
863 struct snd_emu10k1_pcm *epcm = runtime->private_data;
864 int ptr;
865
866 if (!epcm->running)
867 return 0;
868
869 ptr = snd_emu10k1_ptr_read(emu, CCCA, epcm->voices[0]->number) & 0x00ffffff;
870 ptr -= epcm->ccca_start_addr;
871
872 // This is the size of the whole cache minus the interpolator read-ahead,
873 // which leads us to the actual playback position.
874 //
875 // The cache is constantly kept mostly filled, so in principle we could
876 // return a more advanced position representing how far the hardware has
877 // already read the buffer, and set runtime->delay accordingly. However,
878 // this would be slightly different for every channel (and remarkably slow
879 // to obtain), so only a fixed worst-case value would be practical.
880 //
881 ptr -= 64 - 3;
882 if (ptr < 0)
883 ptr += runtime->buffer_size;
884
885 /*
886 dev_dbg(emu->card->dev,
887 "ptr = 0x%lx, buffer_size = 0x%lx, period_size = 0x%lx\n",
888 (long)ptr, (long)runtime->buffer_size,
889 (long)runtime->period_size);
890 */
891 return ptr;
892 }
893
894 static u64 snd_emu10k1_efx_playback_voice_mask(struct snd_emu10k1_pcm *epcm,
895 int channels)
896 {
897 u64 mask = 0;
898
899 for (int i = 0; i < channels; i++) {
900 int voice = epcm->voices[i]->number;
901 mask |= 1ULL << voice;
902 }
903 return mask;
904 }
905
906 static void snd_emu10k1_efx_playback_freeze_voices(struct snd_emu10k1 *emu,
907 struct snd_emu10k1_pcm *epcm,
908 int channels)
909 {
910 for (int i = 0; i < channels; i++) {
911 int voice = epcm->voices[i]->number;
912 snd_emu10k1_ptr_write(emu, CPF_STOP, voice, 1);
913 snd_emu10k1_playback_commit_pitch(emu, voice, PITCH_48000 << 16);
914 }
915 }
916
917 static void snd_emu10k1_efx_playback_unmute_voices(struct snd_emu10k1 *emu,
918 struct snd_emu10k1_pcm *epcm,
919 int channels)
920 {
921 for (int i = 0; i < channels; i++)
922 snd_emu10k1_playback_unmute_voice(emu, epcm->voices[i], false, true,
923 &emu->efx_pcm_mixer[i]);
924 }
925
926 static void snd_emu10k1_efx_playback_stop_voices(struct snd_emu10k1 *emu,
927 struct snd_emu10k1_pcm *epcm,
928 int channels)
929 {
930 for (int i = 0; i < channels; i++)
931 snd_emu10k1_playback_stop_voice(emu, epcm->voices[i]);
932 snd_emu10k1_playback_set_stopped(emu, epcm);
933
934 for (int i = 0; i < channels; i++)
935 snd_emu10k1_playback_mute_voice(emu, epcm->voices[i]);
936 }
937
938 static int snd_emu10k1_efx_playback_trigger(struct snd_pcm_substream *substream,
939 int cmd)
940 {
941 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
942 struct snd_pcm_runtime *runtime = substream->runtime;
943 struct snd_emu10k1_pcm *epcm = runtime->private_data;
944 u64 mask;
945 int result = 0;
946
947 spin_lock(&emu->reg_lock);
948 switch (cmd) {
949 case SNDRV_PCM_TRIGGER_START:
950 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
951 case SNDRV_PCM_TRIGGER_RESUME:
952 mask = snd_emu10k1_efx_playback_voice_mask(
953 epcm, runtime->channels);
954 for (int i = 0; i < 10; i++) {
955 // Note that the freeze is not interruptible, so we make no
956 // effort to reset the bits outside the error handling here.
957 snd_emu10k1_voice_set_loop_stop_multiple(emu, mask);
958 snd_emu10k1_efx_playback_freeze_voices(
959 emu, epcm, runtime->channels);
960 snd_emu10k1_playback_prepare_voices(
961 emu, epcm, true, false, runtime->channels);
962
963 // It might seem to make more sense to unmute the voices only after
964 // they have been started, to potentially avoid torturing the speakers
965 // if something goes wrong. However, we cannot unmute atomically,
966 // which means that we'd get some mild artifacts in the regular case.
967 snd_emu10k1_efx_playback_unmute_voices(emu, epcm, runtime->channels);
968
969 snd_emu10k1_playback_set_running(emu, epcm);
970 result = snd_emu10k1_voice_clear_loop_stop_multiple_atomic(emu, mask);
971 if (result == 0) {
972 // The extra voice is allowed to lag a bit
973 snd_emu10k1_playback_trigger_voice(emu, epcm->extra);
974 goto leave;
975 }
976
977 snd_emu10k1_efx_playback_stop_voices(
978 emu, epcm, runtime->channels);
979
980 if (result != -EAGAIN)
981 break;
982 // The sync start can legitimately fail due to NMIs, etc.
983 }
984 snd_emu10k1_voice_clear_loop_stop_multiple(emu, mask);
985 break;
986 case SNDRV_PCM_TRIGGER_SUSPEND:
987 case SNDRV_PCM_TRIGGER_STOP:
988 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
989 snd_emu10k1_playback_stop_voice(emu, epcm->extra);
990 snd_emu10k1_efx_playback_stop_voices(
991 emu, epcm, runtime->channels);
992
993 epcm->resume_pos = snd_emu10k1_playback_pointer(substream);
994 break;
995 default:
996 result = -EINVAL;
997 break;
998 }
999 leave:
1000 spin_unlock(&emu->reg_lock);
1001 return result;
1002 }
1003
1004
1005 static snd_pcm_uframes_t snd_emu10k1_capture_pointer(struct snd_pcm_substream *substream)
1006 {
1007 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1008 struct snd_pcm_runtime *runtime = substream->runtime;
1009 struct snd_emu10k1_pcm *epcm = runtime->private_data;
1010 unsigned int ptr;
1011
1012 if (!epcm->running)
1013 return 0;
1014 if (epcm->first_ptr) {
1015 udelay(50); /* hack, it takes awhile until capture is started */
1016 epcm->first_ptr = 0;
1017 }
1018 ptr = snd_emu10k1_ptr_read(emu, epcm->capture_idx_reg, 0) & 0x0000ffff;
1019 return bytes_to_frames(runtime, ptr);
1020 }
1021
1022 /*
1023 * Playback support device description
1024 */
1025
1026 static const struct snd_pcm_hardware snd_emu10k1_playback =
1027 {
1028 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1029 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1030 SNDRV_PCM_INFO_RESUME |
1031 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE),
1032 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1033 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_96000,
1034 .rate_min = 4000,
1035 .rate_max = 96000,
1036 .channels_min = 1,
1037 .channels_max = 2,
1038 .buffer_bytes_max = (128*1024),
1039 .period_bytes_max = (128*1024),
1040 .periods_min = 2,
1041 .periods_max = 1024,
1042 .fifo_size = 0,
1043 };
1044
1045 /*
1046 * Capture support device description
1047 */
1048
1049 static const struct snd_pcm_hardware snd_emu10k1_capture =
1050 {
1051 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1052 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1053 SNDRV_PCM_INFO_RESUME |
1054 SNDRV_PCM_INFO_MMAP_VALID),
1055 .formats = SNDRV_PCM_FMTBIT_S16_LE,
1056 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_KNOT,
1057 .rate_min = 8000,
1058 .rate_max = 48000,
1059 .channels_min = 1,
1060 .channels_max = 2,
1061 .buffer_bytes_max = (64*1024),
1062 .period_bytes_min = 384,
1063 .period_bytes_max = (64*1024),
1064 .periods_min = 2,
1065 .periods_max = 2,
1066 .fifo_size = 0,
1067 };
1068
1069 static const struct snd_pcm_hardware snd_emu10k1_capture_efx =
1070 {
1071 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1072 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1073 SNDRV_PCM_INFO_RESUME |
1074 SNDRV_PCM_INFO_MMAP_VALID),
1075 .formats = SNDRV_PCM_FMTBIT_S16_LE,
1076 .rates = SNDRV_PCM_RATE_48000,
1077 .rate_min = 48000,
1078 .rate_max = 48000,
1079 .channels_min = 1,
1080 .channels_max = 16,
1081 .buffer_bytes_max = (64*1024),
1082 .period_bytes_min = 384,
1083 .period_bytes_max = (64*1024),
1084 .periods_min = 2,
1085 .periods_max = 2,
1086 .fifo_size = 0,
1087 };
1088
1089 /*
1090 *
1091 */
1092
1093 static void snd_emu10k1_pcm_mixer_notify1(struct snd_emu10k1 *emu, struct snd_kcontrol *kctl, int idx, int activate)
1094 {
1095 struct snd_ctl_elem_id id;
1096
1097 if (! kctl)
1098 return;
1099 if (activate)
1100 kctl->vd[idx].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1101 else
1102 kctl->vd[idx].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1103 snd_ctl_notify(emu->card, SNDRV_CTL_EVENT_MASK_VALUE |
1104 SNDRV_CTL_EVENT_MASK_INFO,
1105 snd_ctl_build_ioff(&id, kctl, idx));
1106 }
1107
1108 static void snd_emu10k1_pcm_mixer_notify(struct snd_emu10k1 *emu, int idx, int activate)
1109 {
1110 snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_send_routing, idx, activate);
1111 snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_send_volume, idx, activate);
1112 snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_attn, idx, activate);
1113 }
1114
1115 static void snd_emu10k1_pcm_efx_mixer_notify(struct snd_emu10k1 *emu, int idx, int activate)
1116 {
1117 snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_efx_send_routing, idx, activate);
1118 snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_efx_send_volume, idx, activate);
1119 snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_efx_attn, idx, activate);
1120 }
1121
1122 static void snd_emu10k1_pcm_free_substream(struct snd_pcm_runtime *runtime)
1123 {
1124 kfree(runtime->private_data);
1125 }
1126
1127 static int snd_emu10k1_efx_playback_close(struct snd_pcm_substream *substream)
1128 {
1129 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1130 struct snd_emu10k1_pcm_mixer *mix;
1131 int i;
1132
1133 for (i = 0; i < NUM_EFX_PLAYBACK; i++) {
1134 mix = &emu->efx_pcm_mixer[i];
1135 mix->epcm = NULL;
1136 snd_emu10k1_pcm_efx_mixer_notify(emu, i, 0);
1137 }
1138 return 0;
1139 }
1140
1141 static int snd_emu10k1_playback_set_constraints(struct snd_pcm_runtime *runtime)
1142 {
1143 int err;
1144
1145 // The buffer size must be a multiple of the period size, to avoid a
1146 // mismatch between the extra voice and the regular voices.
1147 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
1148 if (err < 0)
1149 return err;
1150 // The hardware is typically the cache's size of 64 frames ahead.
1151 // Leave enough time for actually filling up the buffer.
1152 err = snd_pcm_hw_constraint_minmax(
1153 runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 128, UINT_MAX);
1154 return err;
1155 }
1156
1157 static int snd_emu10k1_efx_playback_open(struct snd_pcm_substream *substream)
1158 {
1159 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1160 struct snd_emu10k1_pcm *epcm;
1161 struct snd_emu10k1_pcm_mixer *mix;
1162 struct snd_pcm_runtime *runtime = substream->runtime;
1163 int i, j, err;
1164
1165 epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
1166 if (epcm == NULL)
1167 return -ENOMEM;
1168 epcm->emu = emu;
1169 epcm->type = PLAYBACK_EFX;
1170 epcm->substream = substream;
1171
1172 runtime->private_data = epcm;
1173 runtime->private_free = snd_emu10k1_pcm_free_substream;
1174 runtime->hw = snd_emu10k1_efx_playback;
1175 if (emu->card_capabilities->emu_model)
1176 snd_emu1010_constrain_efx_rate(emu, runtime);
1177 err = snd_emu10k1_playback_set_constraints(runtime);
1178 if (err < 0) {
1179 kfree(epcm);
1180 return err;
1181 }
1182
1183 for (i = 0; i < NUM_EFX_PLAYBACK; i++) {
1184 mix = &emu->efx_pcm_mixer[i];
1185 for (j = 0; j < 8; j++)
1186 mix->send_routing[0][j] = i + j;
1187 memset(&mix->send_volume, 0, sizeof(mix->send_volume));
1188 mix->send_volume[0][0] = 255;
1189 mix->attn[0] = 0x8000;
1190 mix->epcm = epcm;
1191 snd_emu10k1_pcm_efx_mixer_notify(emu, i, 1);
1192 }
1193 return 0;
1194 }
1195
1196 static int snd_emu10k1_playback_open(struct snd_pcm_substream *substream)
1197 {
1198 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1199 struct snd_emu10k1_pcm *epcm;
1200 struct snd_emu10k1_pcm_mixer *mix;
1201 struct snd_pcm_runtime *runtime = substream->runtime;
1202 int i, err, sample_rate;
1203
1204 epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
1205 if (epcm == NULL)
1206 return -ENOMEM;
1207 epcm->emu = emu;
1208 epcm->type = PLAYBACK_EMUVOICE;
1209 epcm->substream = substream;
1210 runtime->private_data = epcm;
1211 runtime->private_free = snd_emu10k1_pcm_free_substream;
1212 runtime->hw = snd_emu10k1_playback;
1213 err = snd_emu10k1_playback_set_constraints(runtime);
1214 if (err < 0) {
1215 kfree(epcm);
1216 return err;
1217 }
1218 if (emu->card_capabilities->emu_model)
1219 sample_rate = emu->emu1010.word_clock;
1220 else
1221 sample_rate = 48000;
1222 err = snd_pcm_hw_rule_noresample(runtime, sample_rate);
1223 if (err < 0) {
1224 kfree(epcm);
1225 return err;
1226 }
1227 mix = &emu->pcm_mixer[substream->number];
1228 for (i = 0; i < 8; i++)
1229 mix->send_routing[0][i] = mix->send_routing[1][i] = mix->send_routing[2][i] = i;
1230 memset(&mix->send_volume, 0, sizeof(mix->send_volume));
1231 mix->send_volume[0][0] = mix->send_volume[0][1] =
1232 mix->send_volume[1][0] = mix->send_volume[2][1] = 255;
1233 mix->attn[0] = mix->attn[1] = mix->attn[2] = 0x8000;
1234 mix->epcm = epcm;
1235 snd_emu10k1_pcm_mixer_notify(emu, substream->number, 1);
1236 return 0;
1237 }
1238
1239 static int snd_emu10k1_playback_close(struct snd_pcm_substream *substream)
1240 {
1241 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1242 struct snd_emu10k1_pcm_mixer *mix = &emu->pcm_mixer[substream->number];
1243
1244 mix->epcm = NULL;
1245 snd_emu10k1_pcm_mixer_notify(emu, substream->number, 0);
1246 return 0;
1247 }
1248
1249 static int snd_emu10k1_capture_open(struct snd_pcm_substream *substream)
1250 {
1251 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1252 struct snd_pcm_runtime *runtime = substream->runtime;
1253 struct snd_emu10k1_pcm *epcm;
1254
1255 epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
1256 if (epcm == NULL)
1257 return -ENOMEM;
1258 epcm->emu = emu;
1259 epcm->type = CAPTURE_AC97ADC;
1260 epcm->substream = substream;
1261 epcm->capture_ipr = IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL;
1262 epcm->capture_inte = INTE_ADCBUFENABLE;
1263 epcm->capture_ba_reg = ADCBA;
1264 epcm->capture_bs_reg = ADCBS;
1265 epcm->capture_idx_reg = emu->audigy ? A_ADCIDX : ADCIDX;
1266 runtime->private_data = epcm;
1267 runtime->private_free = snd_emu10k1_pcm_free_substream;
1268 runtime->hw = snd_emu10k1_capture;
1269 snd_emu10k1_constrain_capture_rates(emu, runtime);
1270 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1271 &hw_constraints_capture_buffer_sizes);
1272 emu->capture_interrupt = snd_emu10k1_pcm_ac97adc_interrupt;
1273 emu->pcm_capture_substream = substream;
1274 return 0;
1275 }
1276
1277 static int snd_emu10k1_capture_close(struct snd_pcm_substream *substream)
1278 {
1279 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1280
1281 emu->capture_interrupt = NULL;
1282 emu->pcm_capture_substream = NULL;
1283 return 0;
1284 }
1285
1286 static int snd_emu10k1_capture_mic_open(struct snd_pcm_substream *substream)
1287 {
1288 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1289 struct snd_emu10k1_pcm *epcm;
1290 struct snd_pcm_runtime *runtime = substream->runtime;
1291
1292 epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
1293 if (epcm == NULL)
1294 return -ENOMEM;
1295 epcm->emu = emu;
1296 epcm->type = CAPTURE_AC97MIC;
1297 epcm->substream = substream;
1298 epcm->capture_ipr = IPR_MICBUFFULL|IPR_MICBUFHALFFULL;
1299 epcm->capture_inte = INTE_MICBUFENABLE;
1300 epcm->capture_ba_reg = MICBA;
1301 epcm->capture_bs_reg = MICBS;
1302 epcm->capture_idx_reg = emu->audigy ? A_MICIDX : MICIDX;
1303 substream->runtime->private_data = epcm;
1304 substream->runtime->private_free = snd_emu10k1_pcm_free_substream;
1305 runtime->hw = snd_emu10k1_capture;
1306 runtime->hw.rates = SNDRV_PCM_RATE_8000;
1307 runtime->hw.rate_min = runtime->hw.rate_max = 8000;
1308 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1309 &hw_constraints_capture_buffer_sizes);
1310 emu->capture_mic_interrupt = snd_emu10k1_pcm_ac97mic_interrupt;
1311 emu->pcm_capture_mic_substream = substream;
1312 return 0;
1313 }
1314
1315 static int snd_emu10k1_capture_mic_close(struct snd_pcm_substream *substream)
1316 {
1317 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1318
1319 emu->capture_mic_interrupt = NULL;
1320 emu->pcm_capture_mic_substream = NULL;
1321 return 0;
1322 }
1323
1324 static int snd_emu10k1_capture_efx_open(struct snd_pcm_substream *substream)
1325 {
1326 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1327 struct snd_emu10k1_pcm *epcm;
1328 struct snd_pcm_runtime *runtime = substream->runtime;
1329 int nefx = emu->audigy ? 64 : 32;
1330 int idx, err;
1331
1332 epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
1333 if (epcm == NULL)
1334 return -ENOMEM;
1335 epcm->emu = emu;
1336 epcm->type = CAPTURE_EFX;
1337 epcm->substream = substream;
1338 epcm->capture_ipr = IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL;
1339 epcm->capture_inte = INTE_EFXBUFENABLE;
1340 epcm->capture_ba_reg = FXBA;
1341 epcm->capture_bs_reg = FXBS;
1342 epcm->capture_idx_reg = FXIDX;
1343 substream->runtime->private_data = epcm;
1344 substream->runtime->private_free = snd_emu10k1_pcm_free_substream;
1345 runtime->hw = snd_emu10k1_capture_efx;
1346 if (emu->card_capabilities->emu_model) {
1347 snd_emu1010_constrain_efx_rate(emu, runtime);
1348 /*
1349 * There are 32 mono channels of 16bits each.
1350 * 24bit Audio uses 2x channels over 16bit,
1351 * 96kHz uses 2x channels over 48kHz,
1352 * 192kHz uses 4x channels over 48kHz.
1353 * So, for 48kHz 24bit, one has 16 channels,
1354 * for 96kHz 24bit, one has 8 channels,
1355 * for 192kHz 24bit, one has 4 channels.
1356 * 1010rev2 and 1616(m) cards have double that,
1357 * but we don't exceed 16 channels anyway.
1358 */
1359 #if 0
1360 /* For 96kHz */
1361 runtime->hw.channels_min = runtime->hw.channels_max = 4;
1362 #endif
1363 #if 0
1364 /* For 192kHz */
1365 runtime->hw.channels_min = runtime->hw.channels_max = 2;
1366 #endif
1367 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;
1368 } else {
1369 spin_lock_irq(&emu->reg_lock);
1370 runtime->hw.channels_min = runtime->hw.channels_max = 0;
1371 for (idx = 0; idx < nefx; idx++) {
1372 if (emu->efx_voices_mask[idx/32] & (1 << (idx%32))) {
1373 runtime->hw.channels_min++;
1374 runtime->hw.channels_max++;
1375 }
1376 }
1377 epcm->capture_cr_val = emu->efx_voices_mask[0];
1378 epcm->capture_cr_val2 = emu->efx_voices_mask[1];
1379 spin_unlock_irq(&emu->reg_lock);
1380 }
1381 err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1382 &hw_constraints_efx_capture_channels);
1383 if (err < 0) {
1384 kfree(epcm);
1385 return err;
1386 }
1387 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1388 &hw_constraints_capture_buffer_sizes);
1389 emu->capture_efx_interrupt = snd_emu10k1_pcm_efx_interrupt;
1390 emu->pcm_capture_efx_substream = substream;
1391 return 0;
1392 }
1393
1394 static int snd_emu10k1_capture_efx_close(struct snd_pcm_substream *substream)
1395 {
1396 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1397
1398 emu->capture_efx_interrupt = NULL;
1399 emu->pcm_capture_efx_substream = NULL;
1400 return 0;
1401 }
1402
1403 static const struct snd_pcm_ops snd_emu10k1_playback_ops = {
1404 .open = snd_emu10k1_playback_open,
1405 .close = snd_emu10k1_playback_close,
1406 .hw_params = snd_emu10k1_playback_hw_params,
1407 .hw_free = snd_emu10k1_playback_hw_free,
1408 .prepare = snd_emu10k1_playback_prepare,
1409 .trigger = snd_emu10k1_playback_trigger,
1410 .pointer = snd_emu10k1_playback_pointer,
1411 };
1412
1413 static const struct snd_pcm_ops snd_emu10k1_capture_ops = {
1414 .open = snd_emu10k1_capture_open,
1415 .close = snd_emu10k1_capture_close,
1416 .prepare = snd_emu10k1_capture_prepare,
1417 .trigger = snd_emu10k1_capture_trigger,
1418 .pointer = snd_emu10k1_capture_pointer,
1419 };
1420
1421 /* EFX playback */
1422 static const struct snd_pcm_ops snd_emu10k1_efx_playback_ops = {
1423 .open = snd_emu10k1_efx_playback_open,
1424 .close = snd_emu10k1_efx_playback_close,
1425 .hw_params = snd_emu10k1_playback_hw_params,
1426 .hw_free = snd_emu10k1_playback_hw_free,
1427 .prepare = snd_emu10k1_efx_playback_prepare,
1428 .trigger = snd_emu10k1_efx_playback_trigger,
1429 .pointer = snd_emu10k1_playback_pointer,
1430 };
1431
1432 int snd_emu10k1_pcm(struct snd_emu10k1 *emu, int device)
1433 {
1434 struct snd_pcm *pcm;
1435 struct snd_pcm_substream *substream;
1436 int err;
1437
1438 err = snd_pcm_new(emu->card, "emu10k1", device, 32, 1, &pcm);
1439 if (err < 0)
1440 return err;
1441
1442 pcm->private_data = emu;
1443
1444 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1_playback_ops);
1445 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1_capture_ops);
1446
1447 pcm->info_flags = 0;
1448 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1449 strcpy(pcm->name, "ADC Capture/Standard PCM Playback");
1450 emu->pcm = pcm;
1451
1452 /* playback substream can't use managed buffers due to alignment */
1453 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
1454 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG,
1455 &emu->pci->dev,
1456 64*1024, 64*1024);
1457
1458 for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; substream; substream = substream->next)
1459 snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
1460 &emu->pci->dev, 64*1024, 64*1024);
1461
1462 return 0;
1463 }
1464
1465 int snd_emu10k1_pcm_multi(struct snd_emu10k1 *emu, int device)
1466 {
1467 struct snd_pcm *pcm;
1468 struct snd_pcm_substream *substream;
1469 int err;
1470
1471 err = snd_pcm_new(emu->card, "emu10k1", device, 1, 0, &pcm);
1472 if (err < 0)
1473 return err;
1474
1475 pcm->private_data = emu;
1476
1477 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1_efx_playback_ops);
1478
1479 pcm->info_flags = 0;
1480 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1481 strcpy(pcm->name, "Multichannel Playback");
1482 emu->pcm_multi = pcm;
1483
1484 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
1485 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG,
1486 &emu->pci->dev,
1487 64*1024, 64*1024);
1488
1489 return 0;
1490 }
1491
1492
1493 static const struct snd_pcm_ops snd_emu10k1_capture_mic_ops = {
1494 .open = snd_emu10k1_capture_mic_open,
1495 .close = snd_emu10k1_capture_mic_close,
1496 .prepare = snd_emu10k1_capture_prepare,
1497 .trigger = snd_emu10k1_capture_trigger,
1498 .pointer = snd_emu10k1_capture_pointer,
1499 };
1500
1501 int snd_emu10k1_pcm_mic(struct snd_emu10k1 *emu, int device)
1502 {
1503 struct snd_pcm *pcm;
1504 int err;
1505
1506 err = snd_pcm_new(emu->card, "emu10k1 mic", device, 0, 1, &pcm);
1507 if (err < 0)
1508 return err;
1509
1510 pcm->private_data = emu;
1511
1512 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1_capture_mic_ops);
1513
1514 pcm->info_flags = 0;
1515 strcpy(pcm->name, "Mic Capture");
1516 emu->pcm_mic = pcm;
1517
1518 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &emu->pci->dev,
1519 64*1024, 64*1024);
1520
1521 return 0;
1522 }
1523
1524 static int snd_emu10k1_pcm_efx_voices_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1525 {
1526 struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
1527 int nefx = emu->audigy ? 64 : 32;
1528 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1529 uinfo->count = nefx;
1530 uinfo->value.integer.min = 0;
1531 uinfo->value.integer.max = 1;
1532 return 0;
1533 }
1534
1535 static int snd_emu10k1_pcm_efx_voices_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1536 {
1537 struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
1538 int nefx = emu->audigy ? 64 : 32;
1539 int idx;
1540
1541 for (idx = 0; idx < nefx; idx++)
1542 ucontrol->value.integer.value[idx] = (emu->efx_voices_mask[idx / 32] & (1 << (idx % 32))) ? 1 : 0;
1543 return 0;
1544 }
1545
1546 static int snd_emu10k1_pcm_efx_voices_mask_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1547 {
1548 struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
1549 unsigned int nval[2], bits;
1550 int nefx = emu->audigy ? 64 : 32;
1551 int change, idx;
1552
1553 nval[0] = nval[1] = 0;
1554 for (idx = 0, bits = 0; idx < nefx; idx++)
1555 if (ucontrol->value.integer.value[idx]) {
1556 nval[idx / 32] |= 1 << (idx % 32);
1557 bits++;
1558 }
1559
1560 if (bits == 9 || bits == 11 || bits == 13 || bits == 15 || bits > 16)
1561 return -EINVAL;
1562
1563 spin_lock_irq(&emu->reg_lock);
1564 change = (nval[0] != emu->efx_voices_mask[0]) ||
1565 (nval[1] != emu->efx_voices_mask[1]);
1566 emu->efx_voices_mask[0] = nval[0];
1567 emu->efx_voices_mask[1] = nval[1];
1568 spin_unlock_irq(&emu->reg_lock);
1569 return change;
1570 }
1571
1572 static const struct snd_kcontrol_new snd_emu10k1_pcm_efx_voices_mask = {
1573 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1574 .name = "Captured FX8010 Outputs",
1575 .info = snd_emu10k1_pcm_efx_voices_mask_info,
1576 .get = snd_emu10k1_pcm_efx_voices_mask_get,
1577 .put = snd_emu10k1_pcm_efx_voices_mask_put
1578 };
1579
1580 static const struct snd_pcm_ops snd_emu10k1_capture_efx_ops = {
1581 .open = snd_emu10k1_capture_efx_open,
1582 .close = snd_emu10k1_capture_efx_close,
1583 .prepare = snd_emu10k1_capture_prepare,
1584 .trigger = snd_emu10k1_capture_trigger,
1585 .pointer = snd_emu10k1_capture_pointer,
1586 };
1587
1588
1589 /* EFX playback */
1590
1591 #define INITIAL_TRAM_SHIFT 14
1592 #define INITIAL_TRAM_POS(size) ((((size) / 2) - INITIAL_TRAM_SHIFT) - 1)
1593
1594 static void snd_emu10k1_fx8010_playback_irq(struct snd_emu10k1 *emu, void *private_data)
1595 {
1596 struct snd_pcm_substream *substream = private_data;
1597 snd_pcm_period_elapsed(substream);
1598 }
1599
1600 static void snd_emu10k1_fx8010_playback_tram_poke1(unsigned short *dst_left,
1601 unsigned short *dst_right,
1602 unsigned short *src,
1603 unsigned int count,
1604 unsigned int tram_shift)
1605 {
1606 /*
1607 dev_dbg(emu->card->dev,
1608 "tram_poke1: dst_left = 0x%p, dst_right = 0x%p, "
1609 "src = 0x%p, count = 0x%x\n",
1610 dst_left, dst_right, src, count);
1611 */
1612 if ((tram_shift & 1) == 0) {
1613 while (count--) {
1614 *dst_left-- = *src++;
1615 *dst_right-- = *src++;
1616 }
1617 } else {
1618 while (count--) {
1619 *dst_right-- = *src++;
1620 *dst_left-- = *src++;
1621 }
1622 }
1623 }
1624
1625 static void fx8010_pb_trans_copy(struct snd_pcm_substream *substream,
1626 struct snd_pcm_indirect *rec, size_t bytes)
1627 {
1628 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1629 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1630 unsigned int tram_size = pcm->buffer_size;
1631 unsigned short *src = (unsigned short *)(substream->runtime->dma_area + rec->sw_data);
1632 unsigned int frames = bytes >> 2, count;
1633 unsigned int tram_pos = pcm->tram_pos;
1634 unsigned int tram_shift = pcm->tram_shift;
1635
1636 while (frames > tram_pos) {
1637 count = tram_pos + 1;
1638 snd_emu10k1_fx8010_playback_tram_poke1((unsigned short *)emu->fx8010.etram_pages.area + tram_pos,
1639 (unsigned short *)emu->fx8010.etram_pages.area + tram_pos + tram_size / 2,
1640 src, count, tram_shift);
1641 src += count * 2;
1642 frames -= count;
1643 tram_pos = (tram_size / 2) - 1;
1644 tram_shift++;
1645 }
1646 snd_emu10k1_fx8010_playback_tram_poke1((unsigned short *)emu->fx8010.etram_pages.area + tram_pos,
1647 (unsigned short *)emu->fx8010.etram_pages.area + tram_pos + tram_size / 2,
1648 src, frames, tram_shift);
1649 tram_pos -= frames;
1650 pcm->tram_pos = tram_pos;
1651 pcm->tram_shift = tram_shift;
1652 }
1653
1654 static int snd_emu10k1_fx8010_playback_transfer(struct snd_pcm_substream *substream)
1655 {
1656 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1657 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1658
1659 return snd_pcm_indirect_playback_transfer(substream, &pcm->pcm_rec,
1660 fx8010_pb_trans_copy);
1661 }
1662
1663 static int snd_emu10k1_fx8010_playback_hw_free(struct snd_pcm_substream *substream)
1664 {
1665 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1666 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1667 unsigned int i;
1668
1669 for (i = 0; i < pcm->channels; i++)
1670 snd_emu10k1_ptr_write(emu, TANKMEMADDRREGBASE + 0x80 + pcm->etram[i], 0, 0);
1671 return 0;
1672 }
1673
1674 static int snd_emu10k1_fx8010_playback_prepare(struct snd_pcm_substream *substream)
1675 {
1676 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1677 struct snd_pcm_runtime *runtime = substream->runtime;
1678 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1679 unsigned int i;
1680
1681 /*
1682 dev_dbg(emu->card->dev, "prepare: etram_pages = 0x%p, dma_area = 0x%x, "
1683 "buffer_size = 0x%x (0x%x)\n",
1684 emu->fx8010.etram_pages, runtime->dma_area,
1685 runtime->buffer_size, runtime->buffer_size << 2);
1686 */
1687 memset(&pcm->pcm_rec, 0, sizeof(pcm->pcm_rec));
1688 pcm->pcm_rec.hw_buffer_size = pcm->buffer_size * 2; /* byte size */
1689 pcm->pcm_rec.sw_buffer_size = snd_pcm_lib_buffer_bytes(substream);
1690 pcm->tram_pos = INITIAL_TRAM_POS(pcm->buffer_size);
1691 pcm->tram_shift = 0;
1692 snd_emu10k1_ptr_write_multiple(emu, 0,
1693 emu->gpr_base + pcm->gpr_running, 0, /* reset */
1694 emu->gpr_base + pcm->gpr_trigger, 0, /* reset */
1695 emu->gpr_base + pcm->gpr_size, runtime->buffer_size,
1696 emu->gpr_base + pcm->gpr_ptr, 0, /* reset ptr number */
1697 emu->gpr_base + pcm->gpr_count, runtime->period_size,
1698 emu->gpr_base + pcm->gpr_tmpcount, runtime->period_size,
1699 REGLIST_END);
1700 for (i = 0; i < pcm->channels; i++)
1701 snd_emu10k1_ptr_write(emu, TANKMEMADDRREGBASE + 0x80 + pcm->etram[i], 0, (TANKMEMADDRREG_READ|TANKMEMADDRREG_ALIGN) + i * (runtime->buffer_size / pcm->channels));
1702 return 0;
1703 }
1704
1705 static int snd_emu10k1_fx8010_playback_trigger(struct snd_pcm_substream *substream, int cmd)
1706 {
1707 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1708 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1709 int result = 0;
1710
1711 spin_lock(&emu->reg_lock);
1712 switch (cmd) {
1713 case SNDRV_PCM_TRIGGER_START:
1714 /* follow thru */
1715 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1716 case SNDRV_PCM_TRIGGER_RESUME:
1717 #ifdef EMU10K1_SET_AC3_IEC958
1718 {
1719 int i;
1720 for (i = 0; i < 3; i++) {
1721 unsigned int bits;
1722 bits = SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1723 SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC | SPCS_GENERATIONSTATUS |
1724 0x00001200 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT | SPCS_NOTAUDIODATA;
1725 snd_emu10k1_ptr_write(emu, SPCS0 + i, 0, bits);
1726 }
1727 }
1728 #endif
1729 result = snd_emu10k1_fx8010_register_irq_handler(emu, snd_emu10k1_fx8010_playback_irq, pcm->gpr_running, substream, &pcm->irq);
1730 if (result < 0)
1731 goto __err;
1732 snd_emu10k1_fx8010_playback_transfer(substream); /* roll the ball */
1733 snd_emu10k1_ptr_write(emu, emu->gpr_base + pcm->gpr_trigger, 0, 1);
1734 break;
1735 case SNDRV_PCM_TRIGGER_STOP:
1736 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1737 case SNDRV_PCM_TRIGGER_SUSPEND:
1738 snd_emu10k1_fx8010_unregister_irq_handler(emu, &pcm->irq);
1739 snd_emu10k1_ptr_write(emu, emu->gpr_base + pcm->gpr_trigger, 0, 0);
1740 pcm->tram_pos = INITIAL_TRAM_POS(pcm->buffer_size);
1741 pcm->tram_shift = 0;
1742 break;
1743 default:
1744 result = -EINVAL;
1745 break;
1746 }
1747 __err:
1748 spin_unlock(&emu->reg_lock);
1749 return result;
1750 }
1751
1752 static snd_pcm_uframes_t snd_emu10k1_fx8010_playback_pointer(struct snd_pcm_substream *substream)
1753 {
1754 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1755 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1756 size_t ptr; /* byte pointer */
1757
1758 if (!snd_emu10k1_ptr_read(emu, emu->gpr_base + pcm->gpr_trigger, 0))
1759 return 0;
1760 ptr = snd_emu10k1_ptr_read(emu, emu->gpr_base + pcm->gpr_ptr, 0) << 2;
1761 return snd_pcm_indirect_playback_pointer(substream, &pcm->pcm_rec, ptr);
1762 }
1763
1764 static const struct snd_pcm_hardware snd_emu10k1_fx8010_playback =
1765 {
1766 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1767 SNDRV_PCM_INFO_RESUME |
1768 /* SNDRV_PCM_INFO_MMAP_VALID | */ SNDRV_PCM_INFO_PAUSE |
1769 SNDRV_PCM_INFO_SYNC_APPLPTR),
1770 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1771 .rates = SNDRV_PCM_RATE_48000,
1772 .rate_min = 48000,
1773 .rate_max = 48000,
1774 .channels_min = 1,
1775 .channels_max = 1,
1776 .buffer_bytes_max = (128*1024),
1777 .period_bytes_min = 1024,
1778 .period_bytes_max = (128*1024),
1779 .periods_min = 2,
1780 .periods_max = 1024,
1781 .fifo_size = 0,
1782 };
1783
1784 static int snd_emu10k1_fx8010_playback_open(struct snd_pcm_substream *substream)
1785 {
1786 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1787 struct snd_pcm_runtime *runtime = substream->runtime;
1788 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1789
1790 runtime->hw = snd_emu10k1_fx8010_playback;
1791 runtime->hw.channels_min = runtime->hw.channels_max = pcm->channels;
1792 runtime->hw.period_bytes_max = (pcm->buffer_size * 2) / 2;
1793 spin_lock_irq(&emu->reg_lock);
1794 if (pcm->valid == 0) {
1795 spin_unlock_irq(&emu->reg_lock);
1796 return -ENODEV;
1797 }
1798 pcm->opened = 1;
1799 spin_unlock_irq(&emu->reg_lock);
1800 return 0;
1801 }
1802
1803 static int snd_emu10k1_fx8010_playback_close(struct snd_pcm_substream *substream)
1804 {
1805 struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
1806 struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
1807
1808 spin_lock_irq(&emu->reg_lock);
1809 pcm->opened = 0;
1810 spin_unlock_irq(&emu->reg_lock);
1811 return 0;
1812 }
1813
1814 static const struct snd_pcm_ops snd_emu10k1_fx8010_playback_ops = {
1815 .open = snd_emu10k1_fx8010_playback_open,
1816 .close = snd_emu10k1_fx8010_playback_close,
1817 .hw_free = snd_emu10k1_fx8010_playback_hw_free,
1818 .prepare = snd_emu10k1_fx8010_playback_prepare,
1819 .trigger = snd_emu10k1_fx8010_playback_trigger,
1820 .pointer = snd_emu10k1_fx8010_playback_pointer,
1821 .ack = snd_emu10k1_fx8010_playback_transfer,
1822 };
1823
1824 int snd_emu10k1_pcm_efx(struct snd_emu10k1 *emu, int device)
1825 {
1826 struct snd_pcm *pcm;
1827 struct snd_kcontrol *kctl;
1828 int err;
1829
1830 err = snd_pcm_new(emu->card, "emu10k1 efx", device, emu->audigy ? 0 : 8, 1, &pcm);
1831 if (err < 0)
1832 return err;
1833
1834 pcm->private_data = emu;
1835
1836 if (!emu->audigy)
1837 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1_fx8010_playback_ops);
1838 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1_capture_efx_ops);
1839
1840 pcm->info_flags = 0;
1841 if (emu->audigy)
1842 strcpy(pcm->name, "Multichannel Capture");
1843 else
1844 strcpy(pcm->name, "Multichannel Capture/PT Playback");
1845 emu->pcm_efx = pcm;
1846
1847 if (!emu->card_capabilities->emu_model) {
1848 // On Sound Blasters, the DSP code copies the EXTINs to FXBUS2.
1849 // The mask determines which of these and the EXTOUTs the multi-
1850 // channel capture actually records (the channel order is fixed).
1851 if (emu->audigy) {
1852 emu->efx_voices_mask[0] = 0;
1853 emu->efx_voices_mask[1] = 0xffff;
1854 } else {
1855 emu->efx_voices_mask[0] = 0xffff0000;
1856 emu->efx_voices_mask[1] = 0;
1857 }
1858 kctl = snd_ctl_new1(&snd_emu10k1_pcm_efx_voices_mask, emu);
1859 if (!kctl)
1860 return -ENOMEM;
1861 kctl->id.device = device;
1862 err = snd_ctl_add(emu->card, kctl);
1863 if (err < 0)
1864 return err;
1865 } else {
1866 // On E-MU cards, the DSP code copies the P16VINs/EMU32INs to
1867 // FXBUS2. These are already selected & routed by the FPGA,
1868 // so there is no need to apply additional masking.
1869 }
1870
1871 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &emu->pci->dev,
1872 64*1024, 64*1024);
1873
1874 return 0;
1875 }
1876
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